.TH "nvme_get_feature_length2" 9 "nvme_get_feature_length2" "July 2025" "libnvme API manual" LINUX
.SH NAME
nvme_get_feature_length2 \- Retreive the command payload length for a specific feature identifier
.SH SYNOPSIS
.B "int" nvme_get_feature_length2
.BI "(int fid "  ","
.BI "__u32 cdw11 "  ","
.BI "enum nvme_data_tfr dir "  ","
.BI "__u32 *len "  ");"
.SH ARGUMENTS
.IP "fid" 12
Feature identifier, see \fIenum nvme_features_id\fP.
.IP "cdw11" 12
The cdw11 value may affect the transfer (only known fid is
NVME_FEAT_FID_HOST_ID)
.IP "dir" 12
Data transfer direction: false - host to controller, true -
controller to host may affect the transfer (only known fid is
NVME_FEAT_FID_HOST_MEM_BUF).
.IP "len" 12
On success, set to this features payload length in bytes.
.SH "RETURN"
0 on success, -1 with errno set to EINVAL if the function did not
recognize \fIfid\fP.
